Four-blade aluminum milling cutter with chromium-aluminum nitride coating

Abstract

The utility model relates to a four-blade aluminum milling cutter with a chromium-aluminum nitride coating, which belongs to the field of machine tool cutters and comprises a milling cutter body, a connecting seat is fixedly welded at the top end of the milling cutter body, a cooling mechanism is arranged inside the connecting seat, and a protection component is arranged on the outer side of the milling cutter body. A connecting column is fixed to the top end of the connecting base. According to the four-blade aluminum milling cutter with the chromium nitride aluminum coating, the piston plate is pressed, the spring is compressed, cooling liquid is poured into the cooling groove, the cooling liquid flows towards the liquid injection pipe along the cooling groove, when the cooling liquid enters the milling cutter body, the milling cutter body is cooled through the cooling liquid, and the purpose of effectively cooling the milling cutter body is achieved; all the materials in the protection assembly enable the milling cutter body to have a series of excellent performance such as high hardness, abrasion resistance, good strength and toughness, heat resistance and corrosion resistance, and the milling cutter body further has the advantages of being high in strength and hardness and good in toughness and meanwhile has good heat insulation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool cutters, in particular to a four-edged aluminum milling cutter with a chromium nitride aluminum coating. Background Art

[0002] A milling cutter is a rotating tool with one or more teeth used for milling processing, including a four-edge aluminum milling cutter. When working, each tooth cuts off the excess of the workpiece intermittently in turn. The milling cutter is mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines, and the milling cutter inevitably needs to move at high speed while working.

[0003] For example, Chinese patent CN 217964951 U discloses a four-blade aluminum milling cutter with a coating, and the key points of its technical solution are: comprising a shank, a cutter head is arranged on one side of the shank; a first blade, the first blade is fixedly mounted on one side of the cutter head, a second blade is fixedly mounted on one side of the cutter head, a third blade is fixedly mounted on one side of the cutter head, and a fourth blade is fixedly mounted on one side of the cutter head; a cooling component, the cooling component is arranged on one side of the shank.

[0004] The above-mentioned coated four-blade aluminum milling cutter still has certain shortcomings. The titanium aluminum nitride coating can effectively improve the high-temperature processing life of the tool. During cutting, a stable thermal insulation layer is formed on the front side of the tool and the chip interface, which has good thermal insulation performance. The chromium aluminum nitride coating has good thermal corrosion performance. By combining the titanium aluminum nitride coating with the chromium aluminum nitride coating, the high temperature resistance of the cutter head is further improved, and the service life of the cutter head is improved. However, the method of cooling the coolant by flowing to the cutter head through the cooling groove is relatively inconvenient. The coolant can easily penetrate the inside of the cooling groove, which can easily cause waste of coolant. Therefore, the present application proposes a coated four-blade aluminum milling cutter to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a four-edge aluminum milling cutter with a chromium aluminum nitride coating, which has the advantage of good cooling effect and solves the problem of increased costs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-edge aluminum milling cutter with a chromium nitride aluminum coating, comprising a milling cutter body, a connecting seat is welded and fixed to the top of the milling cutter body, a cooling mechanism is arranged inside the connecting seat, a protective assembly is arranged on the outside of the milling cutter body, and a connecting column is fixed to the top of the connecting seat;

[0007] The cooling mechanism comprises a groove opened on the right side of the connecting seat, a spring is fixed to the left wall of the inner cavity of the groove, a piston plate is fixed to the right side of the spring, a cooling groove located on the connecting seat is opened on the inner bottom wall of the groove, and a liquid injection pipe is welded and fixed to the top of the milling cutter body;

[0008] The protection component comprises a hardness layer fixed inside the milling cutter body, a rigid layer is fixed on the outside of the hardness layer, a heat-resistant layer is coated on the outside of the rigid layer, and a heat-insulating layer is coated on the outside of the heat-resistant layer.

[0009] Furthermore, the piston plate seal is movably fitted between the inner walls of the groove cavity.

[0010] Furthermore, the liquid injection pipe is located inside the cooling tank on a side away from the groove.

[0011] Furthermore, the piston plate is in the shape of a cylinder with a sealing sleeve fixed on the outside.

[0012] Furthermore, the protection component includes a protection layer coated on the outside of the thermal insulation layer, and the protection layer is a fluorocarbon coating layer.

[0013] Furthermore, the hardness layer is a tungsten steel layer, and the rigidity layer is a steel layer.

[0014] Furthermore, the heat-resistant layer is composed of a fire-resistant, heat-insulating, and thermal-retaining ceramic coating layer, and the heat-insulating layer is a titanium aluminum nitride coating.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The four-edge aluminum milling cutter with chromium nitride aluminum coating presses the piston plate to compress the spring. At this time, the coolant can be poured into the interior of the cooling groove. The coolant flows along the cooling groove toward the injection pipe. When the coolant enters the interior of the milling cutter body through the injection pipe, the coolant is used to cool the milling cutter body, thereby achieving the purpose of effectively cooling the milling cutter body.

[0017] 2. The four-edged aluminum milling cutter with chromium aluminum nitride coating has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance by protecting the composition of each material in the component. It also has the characteristics of high strength and hardness, good toughness, and good thermal insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cooling mechanism of the utility model;

[0020] Figure 3This is a schematic diagram of the protection component of the utility model.

[0021] In the figure: 1 milling cutter body, 2 cooling mechanism, 201 groove, 202 spring, 203 piston plate, 204 cooling groove, 205 injection pipe, 3 connecting seat, 4 protection component, 401 hardness layer, 402 rigid layer, 403 heat-resistant layer, 404 heat-insulating layer, 405 protection layer, 5 connecting column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 In this embodiment, a four-blade aluminum milling cutter with a chromium nitride aluminum coating includes a milling cutter body 1, a connecting seat 3 is welded and fixed to the top of the milling cutter body 1, a cooling mechanism 2 is provided inside the connecting seat 3, a protective component 4 is provided on the outside of the milling cutter body 1, and a connecting column 5 is fixed to the top of the connecting seat 3.

[0024] See also Figure 2 In order to effectively cool the milling cutter body 1, the cooling mechanism 2 in this embodiment includes a groove 201 opened on the right side of the connecting seat 3, a spring 202 is fixed to the left side wall of the inner cavity of the groove 201, a piston plate 203 is fixed to the right side of the spring 202, and a cooling groove 204 located on the connecting seat 3 is opened on the inner bottom wall of the groove 201, and an injection tube 205 is welded and fixed to the top of the milling cutter body 1.

[0025] In this example, the piston plate 203 is sealed and movably fitted between the inner walls of the inner cavity of the groove 201, and the injection tube 205 is located inside the cooling groove 204 on the side away from the groove 201. By pressing the piston plate 203, the spring 202 begins to compress, and the coolant can be poured into the cooling groove 204. The piston plate 203 is shaped like a cylinder with a sealing sleeve fixed on the outside. When the coolant is poured into the cooling groove 204, the coolant flows along the cooling groove 204 toward the injection tube 205. After the coolant enters the interior of the milling cutter body 1 through the injection tube 205, the coolant is used to cool the milling cutter body 1, thereby achieving the purpose of effectively cooling the milling cutter body 1.

[0026] It should be noted that pressing the piston plate 203 causes the spring 202 to begin to compress, and at this time the coolant can be poured into the interior of the cooling groove 204, and the coolant flows along the cooling groove 204 toward the injection pipe 205. When the coolant enters the interior of the milling cutter body 1 through the injection pipe 205, the coolant is used to cool the milling cutter body 1, thereby achieving the purpose of effectively cooling the milling cutter body 1.

[0027] See also Figure 3 In order to make the milling cutter body 1 have good heat insulation and other properties, the protection component 4 in this embodiment includes a hardness layer 401 fixed inside the milling cutter body 1, a rigid layer 402 is fixed on the outside of the hardness layer 401, a heat-resistant layer 403 is coated on the outside of the rigid layer 402, and a heat-insulating layer 404 is coated on the outside of the heat-resistant layer 403.

[0028] In this example, the protection component 4 includes a protection layer 405 coated on the outside of the heat insulation layer 404, and the protection layer 405 is a fluorocarbon coating layer. The fluorocarbon coating composition of the protective layer 405 makes the milling cutter body 1 have important characteristics such as waterproof, anti-fog, anti-snow, anti-pollution, anti-adhesion, anti-oxidation, anti-corrosion and self-cleaning, and prevention of current conduction. The hardness layer 401 is a tungsten steel layer. The tungsten steel composition of the hardness layer 401 can make the milling cutter body 1 have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. Performance, the rigid layer 402 is a 30 steel layer. The 30 steel composition of the rigid layer 402 can make the milling cutter body 1 have the characteristics of strength and high hardness, and good toughness. The heat-resistant layer 403 is composed of a refractory heat-insulating ceramic coating layer. The heat-resistant layer 403 is composed of a refractory heat-insulating ceramic coating, so that the milling cutter body 1 has the characteristics of heat insulation. The heat insulation layer 404 is a titanium aluminum nitride coating. The chromium aluminum nitride coating of the heat insulation layer 404 can effectively improve the high-temperature processing life of the tool and has good heat insulation performance.

[0029] It should be noted that, through the composition of each material in the protective component 4, the milling cutter body 1 has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. It also has the characteristics of high strength and hardness, good toughness, and good thermal insulation performance.

[0030] It is understandable that in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood through specific circumstances. At the same time, the parts not described in detail in the present invention are all well-known technologies of those skilled in the art.

[0031] The working principle of the above embodiment is:

[0032] (1) When the four-edged aluminum milling cutter with chromium nitride aluminum coating is needed to be used, the piston plate 203 is pressed to compress the spring 202, and the coolant can be poured into the interior of the cooling groove 204. The coolant flows along the cooling groove 204 toward the injection pipe 205. After the coolant enters the interior of the milling cutter body 1 through the injection pipe 205, the coolant is used to cool the milling cutter body 1, thereby achieving the purpose of effectively cooling the milling cutter body 1.

[0033] (2) Through the composition of each material in the protective component 4, the tungsten steel composition of the hardness layer 401 can make the milling cutter body 1 have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. The 30 steel composition of the rigid layer 402 can make the milling cutter body 1 have the characteristics of high strength and hardness and good toughness. The heat-resistant layer 403 is composed of a refractory heat-insulating ceramic coating, so that the milling cutter body 1 has the characteristics of heat insulation and heat preservation. The chromium nitride aluminum coating composition of the heat insulation layer 404 can effectively improve the high-temperature processing life of the tool and has good heat insulation performance. The fluorocarbon coating composition of the protective layer 405 has important characteristics such as waterproof, anti-fog, anti-snow, anti-pollution, anti-adhesion, anti-oxidation, anti-corrosion and self-cleaning as well as prevention of current conduction.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A four-edged aluminum milling cutter with a chromium aluminum nitride coating, comprising a milling cutter body (1), characterized in that: A connecting seat (3) is welded and fixed to the top of the milling cutter body (1), a cooling mechanism (2) is provided inside the connecting seat (3), a protective component (4) is provided on the outside of the milling cutter body (1), and a connecting column (5) is fixed to the top of the connecting seat (3); The cooling mechanism (2) comprises a groove (201) provided on the right side of the connecting seat (3); a spring (202) is fixed to the left side wall of the inner cavity of the groove (201); a piston plate (203) is fixed to the right side of the spring (202); a cooling groove (204) located on the connecting seat (3) is provided on the inner bottom wall of the groove (201); and a liquid injection pipe (205) is welded and fixed to the top end of the milling cutter body (1); The protection component (4) comprises a hardness layer (401) fixed inside the milling cutter body (1), a rigidity layer (402) fixed outside the hardness layer (401), a heat-resistant layer (403) coated outside the rigidity layer (402), and a heat-insulating layer (404) coated outside the heat-resistant layer (403).

2. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The piston plate (203) is sealingly and movably fitted between the inner walls of the inner cavity of the groove (201).

3. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The liquid injection pipe (205) is located inside the cooling tank (204) on a side away from the groove (201).

4. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The piston plate (203) is in the shape of a cylinder with a sealing sleeve fixed on the outside.

5. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The protection component (4) comprises a protection layer (405) coated on the outside of the heat insulation layer (404), and the protection layer (405) is a fluorocarbon coating layer.

6. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The hardness layer (401) is a tungsten steel layer, and the rigidity layer (402) is a 30 steel layer.

7. A four-edge aluminum milling cutter with chromium aluminum nitride coating according to claim 1, characterized in that: The heat-resistant layer (403) is a fire-resistant, heat-insulating, and thermal-retaining ceramic coating layer, and the heat-insulating layer (404) is a titanium aluminum nitride coating.

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